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Windows 7: Would RAM DDR3 1600MHz 1.65v run on 1333MHz 1.5V slot ?

Hi, as the title says my motherboard is a bit old which is ASRock G41C-S and its maximum support of RAM front side bus is 1333MHz, so i'm running 4GB of ram with two different modules one is A-Data 2GB DDR3 1333MHz and another is Apacer 2GB DDR3 1333MHz and i've ran them together for a year without any issues at all but i found that my PC wasn't running at full speed compared to other PC's with the same specifications so i'm planning to buy Kingston HyperX Blu 1600MHz running at 1.65V and now i don't know if my mobo will accept this kind of memory to run it stable without any issues. So please give me an answer and thank you so much in advance

Will DDR3 1666 slot work with older DDR3 1333 mem stick? (laptop)Hello my old laptop Acer aspire 7551g had 4gb DDR3 1333.
The new one is Lenovo G500s with DDR3 1single 1666 so i have one slot left.
So DDR3 1333 + DDR3 1666 will work or not?
The goal is to have 8gb ram so i can cheak if Watch Dogs still lag when driving :) (i know one stupid game not...

Hardware & Devices

DDR3 PC3 12800 or DDR3 PC3-10600ok right now i have 6gb of DDR3 PC3-10600 if i was to switch it out for 6gb of DDR3 PC3 12800 will i noticed a difference or will it still be there same in performance...
thanks

G Skill Ripjaws F3-10666CL9S-4GBRL 4GB DDR3 (1333MHz,Cas 9) timings ?Hi i have
G Skill Ripjaws F3-10666CL9S-4GBRL 4GB DDR3 (1333MHz,Cas 9)
The timings that auto selct with my mobo are cas 7!
however this causes programs to stop working,it doesnt crash the pc but crashes the program .
What are the mem timings i should use this at, This is for another pc...

PC Custom Builds and Overclocking

8GB 1600Mhz + 4GB 1333MhzWould this work? Just that I may sell my 4GB sticks and was wondering if having 2x 4GB sticks at 1600Mhz would work with 2x 2GB sticks at 1333Mhz. Would they just lower down to 1333Mhz?